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The BPBJV mining flameproof medium-voltage converter combines 10 kV switchgear, a phase-shifting transformer (replacing a mobile substation) and a cascaded multilevel converter in one integrated, water-cooled unit. It drives the motor directly without an output filter.
| Series | BPBJV |
|---|---|
| Input voltage | 6 kV, 10 kV |
| Input frequency | 50 Hz, 60 Hz |
| Output voltage | 0 - 3.3 kV |
| Output frequency | 0 - 50 Hz |
| Power range | 1250 / 1600 kW per unit, 2 × 1600 kW combined |
| Cooling | water cooling with separated inner and outer circuits |
| Explosion protection | Ex d [ib] I |
Conveyors, pumps and fans fed directly from the 6 / 10 kV mine supply.
For each order we can provide the technical data sheet, outline drawing, routine test report and, for explosion-proof equipment, a copy of the Ex certificate that matches the nameplate marking. Tell us in the inquiry which documents your project or your inspector requires, so they are prepared before shipment.
The marking Ex d [ib] I combines a flameproof enclosure ("d") for the power section with intrinsically safe ("ib") control and signal circuits. Group I equipment is designed for underground coal mines where methane (firedamp) and coal dust may be present.
Multilevel (BPBJV): a built-in phase-shifting transformer takes 6 or 10 kV directly and feeds nine three-phase low-voltage power cells; three cells in series per phase give 27-pulse rectification and a 13-level output. No separate transformer is needed.
Three-level (BPJV): 6- or 12-pulse rectifier fed from the mine's own transformer (two 1903 V windings), 5-level line-to-line output with an output reactor. The combined version uses separate DC links, so if one converter trips the other keeps running.
| Input | 10 kV or 6 kV (-15 % / +10 %), 50 Hz; three-level version also 3.3 kV |
|---|---|
| Output | 0 - 3.3 kV, 0 - 50 Hz; 0 - 219 A (1250 kW) or 0 - 280 A (1600 kW) |
| Overload | 110 % continuous, 120 % for 30 min, 180 % for 2 s |
| Control | V/F or sensorless vector control, two-quadrant operation |
| Cooling | Water cooling, external water pressure below 3 MPa, flow above 130 L/min |
| Operator interface | 10.2-inch colour screen, metal push-buttons and intrinsically safe wireless mouse (Uo 1.65 V, Io 1.47 A) |
| Explosion protection | Ex d [ib] I Mb |
| Model | Output | Size L × W × H (mm) | Weight (kg) |
|---|---|---|---|
| BPBJV-1250/10/3.3 | 1250 kW | 4580 × 1360 × 1650 | 15000 |
| BPBJV-1600/10/3.3 | 1600 kW | 4580 × 1360 × 1650 | 15000 |
| BPJV-1600/3.3 | 1600 kW | 2070 × 1140 × 1342 | 5500 |
| BPJV-2×1600/3.3 | 2 × 1600 kW | 2990 × 1140 × 1380 | 6800 |
Model example: BPBJV-1250/10/3.3 = mining flameproof and intrinsically safe transformer-converter, voltage source, 1250 kW, 10 kV input, 3.3 kV output.
The BPBJV covers 2 - 3.3 kV.
Rated voltage: 6 kV, 10 kV. Other voltages can be checked on request.
The marking is Ex d [ib] I. Tell us the zone, gas group and temperature class of your site and we confirm the right version.
Cooling method: water cooling with separated inner and outer circuits.
For a fast, accurate quotation please send: rated power (kW), voltage and frequency, motor rating and load type, supply voltage, hazardous-area requirements, quantity and destination port. For a replacement, a photo of the old motor nameplate is the quickest way to match it. Lead time (about 80 days), documents and shipping are explained on our Export Service page.
Yes. Wolong Nanyang explosion-proof motors, both low-voltage and high-voltage, are available with ATEX and IECEx certificates for Europe and international projects, and GOST for the Russian market. Tell us which certificate you need when you ask for a quote.
Yes. For new projects we quote and select the model to your requirements. For a replacement, please send a nameplate photo or outline drawing of the old motor, and we will match the shaft height, mounting and installation dimensions.
Yes. Schorch, Brook Crompton and Morley belong to the Wolong Electric Group, and we can supply Wolong motors built to replace them, matched to your mounting dimensions.
Yes. We ship worldwide on CIF terms, or you can use your own forwarder. The usual production time is about 3 months, depending on the model and quantity.
Rated power (kW), voltage and frequency, number of poles or speed, Ex marking or hazardous zone, mounting type (e.g. B3, B35, V1), quantity and destination port. A nameplate photo of the old motor helps if it is a replacement.
Send us your requirements. An engineer will reply with a model check and price within 24 hours.